#include<stdio.h>
#include<unistd.h>
#include<string.h>

int Div(int x, int y)
{
	if(0==y)
	{
		return -1;
	}
	else
		return x/y;
}
int main()
{
	int result = Div(10,0);
	printf("result: %d\n",result);
	sleep(2);
	return 0;
}
